12412644289 has 2 divisors, whose sum is σ = 12412644290. Its totient is φ = 12412644288.

The previous prime is 12412644281. The next prime is 12412644317. The reversal of 12412644289 is 98244621421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11375289025 + 1037355264 = 106655^2 + 32208^2 .

It is a cyclic number.

It is not a de Polignac number, because 12412644289 - 2³ = 12412644281 is a prime.

It is not a weakly prime, because it can be changed into another prime (12412644281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6206322144 + 6206322145.

It is an arithmetic number, because the mean of its divisors is an integer number (6206322145).

Almost surely, 2^12412644289 is an apocalyptic number.

It is an amenable number.

12412644289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12412644289 is an equidigital number, since it uses as much as digits as its factorization.

12412644289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 43.

The spelling of 12412644289 in words is "twelve billion, four hundred twelve million, six hundred forty-four thousand, two hundred eighty-nine".